# adime_evaluate man page

adime_evaluate

## Synopsis

**#include <adime.h>**

**double adime_evaluate(const char *equation, int *error, double (*var)(const char *name));**

## Description

Helper function for evaluating arithmetic expressions, which may be useful in your programs even though it isn´t really logically connected to the other functions (i.e. it´s not a gui function). It evaluates the provided equation, returning the result, and storing a nonzero value in `error´ if anything goes wrong. If the `var´ function is not NULL, this will be called whenever a variable is encountered in the expression, allowing you to look up and return a suitable value for it. For more information on the expressions, see expressi.txt